The abbreviation is CSS
There is no known abbreviation for the word tool.
The abbreviation for circumference is a capital "C". Sometimes a "P" is used for perimeter.
A
the abbreviation "Enr." could be a short for "Enregistrement" (Record) in French
SE
SE
The medical abbreviation SE stands for "side effect," referring to an unintended or negative effect of a treatment or medication.
SoCal
yebo. another one is SV.
it is an abbreviation which stands for * Macintosh SE "System Expansion", a personal computer created by Apple software engineering
"SE" for automobiles is usually an abbreviation for "Special Edition", meaning that either this model has more or less options that those that do not bear the "SE".
It doesn't have an abbreviation per se. Its atomic symbols is Na.NA
VA is the postal abbreviation for Virginia. It is also a common abbreviation for Veterans' Administration.
There is no root word per se. The word quasar is an abbreviation for quasi-stellar radios source.
In Roman numerals, the letter D was used to represent 500, though it's hard to consider Roman numerals an "abbreviation" per se ("1776" is much shorter than MDCCLXXVI).
The term 'qui tam', when used by a lawyer, is an abbreviation of a phrase. The phrase is "qui tam pro domino rege quam pro se ipso in hac parte sequiter".